A pin-up silhouette is crafted with the right underwear; cue <b><a href=" http://www.selfridges.com/GB/en/cat/Spanx/womens/" style="text-decoration: none"><font color="black">Spanx</font></a>’s Shape my day slip</b>. Seamless yarns ensure no one else knows your secret and make this the perfect piece for under occasion dresses. A smoothing, firming stretch fabric glosses over excess for traceable curves. An open bust eradicates hassle with necklines and an all-over fit; wear your most comfortable and supportive bra to complete the look.